سنن أبي داود #4833
Sahih (Authentic)
Good Manners
لَيْسَ مِنَّا مَنْ لَمْ يَرْحَمْ صَغِيرَنَا وَيَعْرِفْ حَقَّ كَبِيرِنَا
The Messenger of Allah (ﷺ) said: 'He who does not show mercy to our young ones and respect to our old ones is not one of us.'
سلسلة الرواة (الإسناد)
Narrated Abu Huraira